Baseline Policy Enhancements, Part 1

[schrolla]

💡 Summary

Several SCuBA M365 baseline policy updates and additions are in the process of being reviewed, developed, and made. This epic ensures that baseline changes are coordinated for internal consistency. Small baseline changes will be made during this epic, while more complex changes will have recommendations agreed upon for future implementation in another epic (Part 2).

Motivation and context

Baseline changes are necessary to keep pace with changing services and evolving guidance.

Implementation notes

Please provide details for implementation, such as:

• Developers review each issue for fix or enhancement against current baseline
• Perform testing necessary to validate behavior and understand settings
• Make recommendation to group for policy updates or changes
• Create updates and issue PR for review of small changes

Acceptance criteria

The following issues are completed

• Successfully created discontinued policies template in markdown Create template markdown for discontinued policy IDs for M365 & GWS #1016
• MITRE ATT&CK mappings added to baselines Add MITRE ATT&CK TTP Mappings to M365 SCBs #937
• SPF policy items in Exchange Online baseline have been reviewed and revised Revise SPF Requirements #900
• Additional baseline change recommendations have been agreed to by the product owner